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999-0128-400

Transformer, Audio Frequency

Part Number999-0128-400
ManufacturerVaro
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameTRANSFORMER,AUDIO FREQUENCY
Federal Supply Class5950 — Coils and Transformers
Inclosure TypeFULLY INCLOSED
Impedance Rating In Ohms20000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Terminal Type And Quantity6 WIRE LEAD
Body Outside Diameter0.500 INCHES NOMINAL
Winding Function And Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Maximum Transformer Power Rating100.0 MILLIWATTS SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Mounting MethodTERMINAL SINGLE GROUP
Body Length0.500 INCHES NOMINAL
Winding Operating Current500.0 MICROAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Vendor Part Numbers5T1573, 999-0128-423
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RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant

Frequently asked

Is 999-0128-400 available?
We can source 999-0128-400 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 999-0128-400 by Varo obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 999-0128-400 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 999-0128-400?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 999-0128-400?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.